function setHeight(obj)
{
obj.style.height = obj.scrollHeight + 'px';
}
document.getElementById("comment").onkeydown = function (moz_ev)
{
var ev = null;
if (window.event){
		ev = window.event;
	}else{
		ev = moz_ev;
	}
if (ev != null && ev.ctrlKey && ev.keyCode == 13||ev.keyCode == 10)
	{
		document.getElementById("submit").click();
	}
}